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            <td width="35%" class="headerValue"><a href="../../../../index.html">top level</a> - <a href="index.html">usr/include/boost/system</a> - system_error.hpp<span style="font-size: 80%;"> (source / <a href="system_error.hpp.func-sort-c.html">functions</a>)</span></td>
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            <td class="headerCovTableEntry">11</td>
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            <td class="headerItem">Date:</td>
            <td class="headerValue">2020-09-11 22:50:33</td>
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<pre class="sourceHeading">          Line data    Source code</pre>
<pre class="source">
<a name="1"><span class="lineNum">       1 </span>            : //  Boost system_error.hpp  --------------------------------------------------//</a>
<span class="lineNum">       2 </span>            : 
<span class="lineNum">       3 </span>            : //  Copyright Beman Dawes 2006
<span class="lineNum">       4 </span>            : 
<span class="lineNum">       5 </span>            : //  Distributed under the Boost Software License, Version 1.0. (See accompanying
<span class="lineNum">       6 </span>            : //  file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
<span class="lineNum">       7 </span>            : 
<span class="lineNum">       8 </span>            : #ifndef BOOST_SYSTEM_ERROR_HPP
<span class="lineNum">       9 </span>            : #define BOOST_SYSTEM_ERROR_HPP
<span class="lineNum">      10 </span>            : 
<span class="lineNum">      11 </span>            : #include &lt;string&gt;
<span class="lineNum">      12 </span>            : #include &lt;stdexcept&gt;
<span class="lineNum">      13 </span>            : #include &lt;cassert&gt;
<span class="lineNum">      14 </span>            : #include &lt;boost/system/error_code.hpp&gt;
<span class="lineNum">      15 </span>            : 
<span class="lineNum">      16 </span>            : namespace boost
<span class="lineNum">      17 </span>            : {
<span class="lineNum">      18 </span>            :   namespace system
<span class="lineNum">      19 </span>            :   {
<a name="20"><span class="lineNum">      20 </span>            :     //  class system_error  ------------------------------------------------------------//</a>
<span class="lineNum">      21 </span>            : 
<span class="lineNum">      22 </span><span class="lineNoCov">          0 :     class BOOST_SYMBOL_VISIBLE system_error : public std::runtime_error</span>
<span class="lineNum">      23 </span>            :     // BOOST_SYMBOL_VISIBLE is needed by GCC to ensure system_error thrown from a shared
<span class="lineNum">      24 </span>            :     // library can be caught. See svn.boost.org/trac/boost/ticket/3697
<span class="lineNum">      25 </span>            :     {
<span class="lineNum">      26 </span>            :     public:
<span class="lineNum">      27 </span>            :       system_error( error_code ec )
<span class="lineNum">      28 </span>            :           : std::runtime_error(&quot;&quot;), m_error_code(ec) {}
<span class="lineNum">      29 </span>            : 
<span class="lineNum">      30 </span>            :       system_error( error_code ec, const std::string &amp; what_arg )
<a name="31"><span class="lineNum">      31 </span>            :           : std::runtime_error(what_arg), m_error_code(ec) {}</a>
<span class="lineNum">      32 </span>            : 
<span class="lineNum">      33 </span><span class="lineNoCov">          0 :       system_error( error_code ec, const char* what_arg )</span>
<span class="lineNum">      34 </span><span class="lineNoCov">          0 :           : std::runtime_error(what_arg), m_error_code(ec) {}</span>
<span class="lineNum">      35 </span>            : 
<span class="lineNum">      36 </span>            :       system_error( int ev, const error_category &amp; ecat )
<span class="lineNum">      37 </span>            :           : std::runtime_error(&quot;&quot;), m_error_code(ev,ecat) {}
<span class="lineNum">      38 </span>            : 
<span class="lineNum">      39 </span>            :       system_error( int ev, const error_category &amp; ecat,
<span class="lineNum">      40 </span>            :         const std::string &amp; what_arg )
<span class="lineNum">      41 </span>            :           : std::runtime_error(what_arg), m_error_code(ev,ecat) {}
<span class="lineNum">      42 </span>            : 
<span class="lineNum">      43 </span>            :       system_error( int ev, const error_category &amp; ecat,
<span class="lineNum">      44 </span>            :         const char * what_arg )
<a name="45"><span class="lineNum">      45 </span>            :           : std::runtime_error(what_arg), m_error_code(ev,ecat) {}</a>
<span class="lineNum">      46 </span>            : 
<span class="lineNum">      47 </span><span class="lineNoCov">          0 :       virtual ~system_error() throw() {}</span>
<span class="lineNum">      48 </span>            : 
<span class="lineNum">      49 </span>            :       const error_code &amp;  code() const throw() { return m_error_code; }
<span class="lineNum">      50 </span>            :       const char *        what() const throw();
<span class="lineNum">      51 </span>            : 
<span class="lineNum">      52 </span>            :     private:
<span class="lineNum">      53 </span>            :       error_code           m_error_code;
<span class="lineNum">      54 </span>            :       mutable std::string  m_what;
<span class="lineNum">      55 </span>            :     };
<span class="lineNum">      56 </span>            : 
<a name="57"><span class="lineNum">      57 </span>            :     //  implementation  ------------------------------------------------------//</a>
<span class="lineNum">      58 </span>            : 
<span class="lineNum">      59 </span><span class="lineNoCov">          0 :     inline const char * system_error::what() const throw()</span>
<span class="lineNum">      60 </span>            :     // see http://www.boost.org/more/error_handling.html for lazy build rationale
<span class="lineNum">      61 </span>            :     {
<span class="lineNum">      62 </span><span class="lineNoCov">          0 :       if ( m_what.empty() )</span>
<span class="lineNum">      63 </span>            :       {
<span class="lineNum">      64 </span>            : #ifndef BOOST_NO_EXCEPTIONS
<span class="lineNum">      65 </span>            :         try
<span class="lineNum">      66 </span>            : #endif
<span class="lineNum">      67 </span>            :         {
<span class="lineNum">      68 </span><span class="lineNoCov">          0 :           m_what = this-&gt;std::runtime_error::what();</span>
<span class="lineNum">      69 </span><span class="lineNoCov">          0 :           if ( !m_what.empty() ) m_what += &quot;: &quot;;</span>
<span class="lineNum">      70 </span><span class="lineNoCov">          0 :           m_what += m_error_code.message();</span>
<span class="lineNum">      71 </span>            :         }
<span class="lineNum">      72 </span>            : #ifndef BOOST_NO_EXCEPTIONS
<span class="lineNum">      73 </span><span class="lineNoCov">          0 :         catch (...) { return std::runtime_error::what(); }</span>
<span class="lineNum">      74 </span>            : #endif
<span class="lineNum">      75 </span>            :       }
<span class="lineNum">      76 </span><span class="lineNoCov">          0 :       return m_what.c_str();</span>
<span class="lineNum">      77 </span>            :     }
<span class="lineNum">      78 </span>            : 
<span class="lineNum">      79 </span>            :   } // namespace system
<span class="lineNum">      80 </span>            : } // namespace boost
<span class="lineNum">      81 </span>            : 
<span class="lineNum">      82 </span>            : #endif // BOOST_SYSTEM_ERROR_HPP
<span class="lineNum">      83 </span>            : 
<span class="lineNum">      84 </span>            : 
</pre>
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